Korloy SNMG120408-HA PC9030 0.8mm Sharp Edge Turning Insert for Stainless (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy SNMG120408-HA PC9030 is a high-performance Double-Sided Square Turning Insert engineered for the challenges of Stainless Steel (M-Group) and Super Alloys. Featuring a reinforced 0.8mm Corner Radius and the legendary -HA (High-Sharpness) chipbreaker, this insert is designed to minimize cutting resistance and heat generation. The PC9030 PVD Coating provides a superior thermal barrier, preventing "Built-Up Edge" (BUE) in gummy materials like 304, 316L, and Titanium alloys.
8-Edge High Productivity: Why compromise on cost? The SNMG120408-HA gives you 8 usable cutting edges. When machining large stainless components, the 0.8mm radius ensures the tool tip stays cool and intact, while the HA geometry prevents the material from "welding" to the insert.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG120408-HA |
| Corner Radius | 0.8 mm (Durability & Finish) |
| Chipbreaker | -HA (Sharp Edge / Low Resistance) |
| Grade | PC9030 (PVD Specialty for Tough Materials) |
Core Performance Benefits:
- Reduced Work Hardening: The ultra-sharp HA edge shears the material cleanly, preventing the surface of stainless steel from hardening before the next pass.
- Superior Toughness: 0.8mm radius provides the structural strength needed for medium-duty turning and light interrupted cuts.
- Advanced PVD Shield: PC9030 coating resists chemical adhesion, crucial for machining nickel-based alloys and 300-series stainless.
- Excellent Chip Control: Even at varying depths of cut, the HA geometry ensures chips are curled and broken away from the workpiece.
Recommended Cutting Parameters (Stainless Steel & Alloys):
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| 304 / 316 Stainless | 90 - 170 m/min | 0.15 - 0.35 mm/rev | 0.8 - 4.0 mm |
| Duplex Stainless | 50 - 100 m/min | 0.12 - 0.25 mm/rev | 0.5 - 3.0 mm |
| Titanium (Gr. 5) | 40 - 85 m/min | 0.10 - 0.22 mm/rev | 0.5 - 2.5 mm |
Compatible Tool Holders:
Precision matched for all 12.7mm IC negative tool holders:
- External Turning (Standard): MSSNR 2525M12 / 3232P12
- Internal Boring Bars: S32T-MSSNR12 / S40U-MSSNR12
Machinist Tip: Why SNMG120408-HA is the Pro's Choice
Optimizing results for tough alloy turning:
Anti-Vibration. The HA geometry is significantly sharper than the GS or HM versions. This lowers cutting pressure, making it the best SNMG choice for deep boring or thin-wall stainless turning where chatter is common.
Better Thermal Mass. The 0.8mm radius handles the heat of stainless steel machining better than a 0.4mm tip. It allows for faster feeds ($fn$), which helps push the heat into the chip rather than the tool.
Pro Advice: When using SNMG120408-HA PC9030, always maintain a Depth of Cut ($ap$) of at least 0.5mm. This ensures the chipbreaker is fully engaged and the tool is cutting under the surface skin of the material.
Packaging: 10 pieces per box.
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Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.